17. vol gabungan = vol l + vol ll = (p x l x t) + (s x s x s) = (25 x 10 x 12) + (10 x 10 x 10) = 3000 + 1000 = 4000 cm²
jawab : C
18. vol = 1/2 x luas alas x t = 1/2 x (s x s) x t = 1/2 x (8 x 8) x 18 = 64 x 9 = 576 cm²
19. vol gabungan = vol tabung + vol balok = πr²t + (p x l x t) = (22/7 x 14 x 14 x 32) + (40 x 20 x 16) = (22 x 2 x 14 x 32) + (40 x 20 x 16) = 19.712 + 12.800 = 32.512 cm³
Jawaban:
Ada di penjelasan
Penjelasan dengan langkah-langkah:
16. s² = r² + t² = 5² + 12² = 25 + 144 = 169
s = √169 = 13
LP = πr (r + s) = 3,14.5 (5 + 13) = 15,7 x 18 = 282,6 cm²
jawab : A
17. vol gabungan = vol l + vol ll = (p x l x t) + (s x s x s) = (25 x 10 x 12) + (10 x 10 x 10) = 3000 + 1000 = 4000 cm²
jawab : C
18. vol = 1/2 x luas alas x t = 1/2 x (s x s) x t = 1/2 x (8 x 8) x 18 = 64 x 9 = 576 cm²
19. vol gabungan = vol tabung + vol balok = πr²t + (p x l x t) = (22/7 x 14 x 14 x 32) + (40 x 20 x 16) = (22 x 2 x 14 x 32) + (40 x 20 x 16) = 19.712 + 12.800 = 32.512 cm³